WO2020255735A1

WO2020255735A1 - Brake device

Info

Publication number: WO2020255735A1
Application number: PCT/JP2020/022150
Authority: WO
Inventors: 登三崎
Original assignee: 株式会社マルイチ
Priority date: 2019-06-17
Filing date: 2020-06-04
Publication date: 2020-12-24
Also published as: EP3984600A4; JP2020202961A; EP3984600A1; JP6578503B1

Abstract

[Problem] To enable effective braking of a rope. [Solution] This brake device is provided with: a friction member surrounding a rope; and a hook for applying tension to the friction member in the longitudinal direction of the rope. The friction member is biased so as to be in pressure contact with the rope when the tension is applied thereto. The friction member is a member stretchable/contractible in the longitudinal direction of the rope, and is made of, for example, a resin or a metal. In addition, in another embodiment, the brake device is provided with: a friction member surrounding a rope; an upper cylindrical member provided on the upper end of the friction member; and a lower cylindrical member provided to the lower end of the friction member, wherein the friction member is biased so as to be in pressure contact with the rope when the tension is applied to the friction member, and is a member stretchable/contractible in the longitudinal direction of the rope.

Description

Braking device

The present invention relates to a braking device.

As a rope braking device, an ascender that supports climbing is known, for example, as disclosed in Patent Document 1.

U.S. Pat. No. 8225905

In an ascender as disclosed in Patent Document 1, since the cam is pressed against the rope from one direction, it is necessary to provide unevenness on the cam in order to obtain sufficient friction. However, this gives a local force to the rope, which may damage the outer skin of the rope.

The present invention has been made in view of such a background, and an object of the present invention is to provide a technique for effectively braking a rope.

The main invention of the present invention for solving the above problems is a braking device, which includes a friction member surrounding the rope and a hook for applying tension in the longitudinal direction of the rope to the friction member. The friction member is urged to press against the rope when tension is applied. The friction member is a member that can be expanded and contracted in the longitudinal direction of the rope, and is, for example, resin or metal.

Other problems disclosed in the present application and solutions thereof will be clarified in the columns and drawings of the embodiments of the invention.

According to the present invention, the rope can be effectively braked.

It is a figure explaining the braking device 1 which concerns on 1st Embodiment of this invention. It is a figure explaining the expanded / contracted state of the braking device 1. It is a figure which shows the example of the braking device 1 which concerns on the 2nd Embodiment of this invention. It is a figure which shows the example of the braking device 1 which concerns on 3rd Embodiment of this invention. It is a figure which shows the example of the braking device 1 which concerns on 4th Embodiment of this invention. It is a figure explaining the braking device 1 which concerns on 5th Embodiment of this invention. It is a figure explaining the state which the plate material 51 and the connecting part 52 are connected. It is a figure explaining the braking device 1 which concerns on 6th Embodiment of this invention. It is a figure explaining the braking device 1 which concerns on 7th Embodiment of this invention. It is a figure which shows the configuration example of the conventional braking device 9. It is a figure explaining the braking device 1 which concerns on 8th Embodiment of this invention. It is a figure explaining the braking device 1 which concerns on 9th Embodiment of this invention. It is a figure explaining the cylindrical member which concerns on 9th Embodiment of this invention. It is a figure explaining the cylindrical member which concerns on 9th Embodiment of this invention. It is a figure explaining the main body part which concerns on 9th Embodiment of this invention. It is a figure explaining the protrusion of the cylindrical member of the modification which concerns on 9th Embodiment of this invention. It is a figure explaining the protrusion of the cylindrical member of the modification which concerns on 9th Embodiment of this invention. It is a figure explaining the movable mechanism of the cylindrical member of the modification which concerns on 9th Embodiment of this invention. It is a figure explaining the movable mechanism of the cylindrical member of the modification which concerns on 9th Embodiment of this invention. It is a figure explaining the movable mechanism of the cylindrical member of the modification which concerns on 9th Embodiment of this invention. It is a figure explaining the movable mechanism of the cylindrical member of the modification which concerns on 9th Embodiment of this invention. It is a figure explaining the modified example of the cylindrical member of the modified example which concerns on 9th Embodiment of this invention. It is a figure explaining the modification of the modification which concerns on 9th Embodiment of this invention. It is sectional drawing of the modification which concerns on 9th Embodiment of this invention. It is a schematic diagram of the cylindrical member of the modification which concerns on 9th Embodiment of this invention. It is a figure explaining the cylindrical member of the modification which concerns on 9th Embodiment of this invention.

The contents of the embodiments of the present invention will be listed and described. The braking device according to the embodiment of the present invention has the following configuration.

[Item 1]
The friction member that surrounds the rope and
The friction member is provided with a hook for applying tension in the longitudinal direction of the rope.
The friction member is urged to press contact with the rope when the tension is applied.
Rings are provided at the first and second ends of the friction member, respectively.
Further provided with a rod-shaped member penetrating the ring at the first end and the ring at the second end.
A braking device characterized by.
[Item 2]
The friction member that surrounds the rope and
The friction member is provided with a hook for applying tension in the longitudinal direction of the rope.
The friction member is urged so as to be in pressure contact with the rope when the tension is applied, and the plate-shaped member is connected in a tubular shape by a coupling member.
A braking device characterized by.
[Item 3]
The braking device according to item 1 or item 2.
The friction member is a spring
A braking device characterized by.
[Item 4]
The braking device according to item 1 or item 2.
Further provided with a cover for accommodating the friction member
The first end of the friction member is fixed to the cover and
The first hook is arranged on the cover
The second hook is arranged at the second end of the friction member,
A braking device characterized by.
[Item 5]
The braking device according to item 1 or item 2.
The friction member has a tubular shape having a quadrangular or octagonal cross section.
A braking device characterized by.
[Item 6]
The braking device according to item 1 or item 2.
Further provided with a cover for accommodating the friction member,
A braking device characterized by.
[Item 7]
The friction member that surrounds the rope and
A hook for applying tension in the longitudinal direction of the rope to the friction member is provided.
The friction member is urged to press contact with the rope when the tension is applied.
It is a braking device characterized by
The friction member is a member that can expand and contract in the longitudinal direction of the rope.
With multiple first members that are elongated
A braking device including a plurality of second members that rotatably connect the plurality of the first members.
[Item 8]
The braking device according to item 7, wherein the first member is arranged at an angle with respect to the longitudinal direction.
[Item 9]
The second member connects four first members to each other.
Item 8. The braking device according to item 8, wherein the first member is connected to the second member at both ends thereof.
[Item 10]
The first member is provided with a first through hole.
The second member is provided with a second through hole.
The braking device according to any one of items 7 to 9, further comprising a pin passing through the first through hole and the second through hole.
[Item 11]
The braking device according to any one of items 7 to 10, wherein the first member is curved so as to be convex outward.
[Item 12]
The braking device according to any one of items 7 to 11, wherein the friction member has a cylindrical cross section.
[Item 13]
The braking device according to item 12, wherein the friction member has a quadrangular or octagonal cross section.
[Item 14]
The friction member that surrounds the rope and
A hook for applying tension in the longitudinal direction of the rope to the friction member is provided.
The friction member is urged to press contact with the rope when the tension is applied.
It is a braking device characterized by
The friction member is a member that can expand and contract in the longitudinal direction of the rope.
A braking device, characterized in that a plurality of stretchable long members are woven diagonally with respect to the longitudinal direction.
[Item 15]
The friction member that surrounds the rope and
An upper tubular member provided at the upper end of the friction member and a lower tubular member provided at the lower end of the friction member are provided.
A braking device characterized in that the friction member is a member that is urged to be in pressure contact with the rope when the tension is applied and is expandable and contractible in the longitudinal direction of the rope.
[Item 16]
The braking device according to item 15, wherein at least one of the upper tubular member and the lower tubular member is provided with a protrusion on an inner wall.
[Item 17]
At least one of the upper tubular member and the lower tubular member comprises a connecting portion to be coupled to an end portion of the friction member.
The braking device according to item 15 or 16, wherein the connecting portion includes a movable member that can rotate in a direction that increases the diameter of the friction member.
[Item 18]
The braking device according to item 17, wherein the movable member is a hinge.
[Item 19]
At least one of the upper tubular member and the lower tubular member has an end face on a side that does not bond with the friction member.
The braking device according to any one of items 15 to 19, wherein the corner portion formed by the inner wall and the end face is provided with an R shape.
[Item 20]
At least one of the upper tubular member and the lower tubular member
The braking device according to any one of items 15 to 19, wherein an opening / closing mechanism is provided on the side surface.
[Item 21]
The braking device according to any one of items 15 to 20, which is vertically symmetrical.

Hereinafter, the braking device 1 according to the embodiment of the present invention will be described. The braking device 1 of the present embodiment is a descender that controls the sliding of the climbing rope by friction in order to assist the descent using the rope. It is also possible to use the braking device 1 of this embodiment as an ascender.

FIG. 10 is a diagram showing a configuration example of the conventional braking device 9. In the conventional braking device 9, the rope 2 is guided between the main body 91 and the swinging portion 92. When the hole 94 provided on the opposite side of the swinging portion 92 to the rope 2 is pulled downward in the vertical direction, the swinging portion 92 swings around the shaft 93, and the end portion 95 is urged toward the rope 2. , The rope 2 is sandwiched between the end portion 95 and the guide portion inner wall 96 of the main body 91, whereby the sliding of the rope 2 is stopped. A plurality of grooves 97 are formed in the end portion 95 to increase the frictional force between the end portion 95 and the rope 2.

As described above, in the conventional braking device 9, the rope 2 is sandwiched between the end portion 95 of the swing portion 92 and the guide portion inner wall 96, and particularly the uneven end portion 95 is pressed against the rope 2. Therefore, local stress is applied to the rope 2, which may cause damage to the outer skin of the rope 2.

Therefore, in the present invention, instead of sandwiching the rope 2 from two directions, stress due to urging is applied from three or more directions, preferably from at least four directions or more, and more preferably substantially evenly from the entire circumference. The braking device 1 that generates friction is provided.

<First Embodiment>
FIG. 1 is a diagram illustrating a braking device 1 according to the first embodiment. In this embodiment, it is assumed that the braking device 1 is used as a descender. The braking device 1 according to the first embodiment includes a main body portion 11, and the main body portion 11 is composed of a spring. The inner diameter of the main body 11 is set to a size that allows the rope 2 to pass through the inside, and the rope 2 should be slidable while the inner surface of the main body 11 is in contact with the outer skin of the rope 2. Suitable. A hook 15 is provided at the lower end 13 of the main body 11, and the inner diameter of the main body 11 is reduced by connecting the hook 15 to the body and pulling down the lower end 13 (moving in the direction of the arrow DN in FIG. 1) when descending. Since it spreads and friction is reduced, the main body 101 starts to descend while generating appropriate sliding. For example, when the user pulls up the rope (not shown) connected to the hook 15 in the direction of the arrow UP, or manually lifts the hook 15 or the lower end portion 13 in the direction of the arrow UP, the inner diameter of the main body portion 11 expands. The rope becomes slidable. Using this, the user can go up.

FIG. 2 is a diagram for explaining the expanded / contracted state of the braking device 1. FIG. 2B shows a state in which the lower end portion 13 of the main body portion 11 of the braking device 1 shown in FIG. 2A is pulled down. The longitudinal length L2 of the main body 11 in FIG. 2B is longer than the length L1 in FIG. 2A, and the inner diameter W2 of the main body 11 in FIG. 2B is FIG. 2A. ) Is smaller than the inner diameter W1.

In the state of FIG. 2A, it is assumed that the rope 2 is slidable inside the braking device 1 while the inner surface of the main body 11 and the outer skin of the rope 2 are in contact with each other. On the other hand, in the state of FIG. 2B, a force F in the radial direction is applied from the main body 11 to the rope 2 from the entire circumference of the rope 2. Therefore, the friction between the main body 11 and the rope 2 increases, and the rope 2 becomes difficult to slide with respect to the main body 11. As a result, the rope 2 is braked. In this way, the braking device 1 can brake the rope 2 passed through the inside.

In the braking device 1 of the present embodiment, a substantially even radial inward force F can be applied to the rope 2 by the main body 1 from the entire circumference. Therefore, the force applied locally to the rope 2 is reduced (the force applied to the outer circumference of the rope 2 is dispersed) as compared with the configuration in which the rope 2 is sandwiched from two directions as in the conventional technique shown in FIG. ), So the risk of tearing of the rope 2, especially the exodermis, can be reduced. Since the rope exerts tension mainly by the exodermis, it is possible to prevent the rope 2 from decreasing in tension and prolong the life by reducing the damage to the exodermis.

<Second embodiment>
FIG. 3 is a diagram showing an example of the braking device 1 according to the second embodiment of the present invention. In the second embodiment, the main body portion 11 substantially the same as that in the first embodiment is arranged inside the case 3. In the second embodiment, it is assumed that the case 3 has a cylindrical shape, but for example, it may be a tubular body having a polygonal cross section. The length of the case 3 may preferably be greater than or equal to the length of the main body 11. The length of the case 3 may be equal to or greater than the sum of the length of the main body 11 and the length of the hook 15.

The main body portion 11 is fixed to the case 3 by the locking portion 21. It is desirable that the locking portion 21 fixes the upper end portion 12 of the main body portion 11 and the case 3. A plurality of locking portions 21 may be provided. For example, a plurality of upper end portions 12 can be fixed to the case 3. Further, preferably, the locking portions 21 may be provided as a pair at positions facing each other on the inner surface of the cylinder.

In the braking device 1 of the second embodiment, since the case 3 covers the main body portion 11, for example, the main body portion 11 composed of a spring or the like is grasped, the extension of the main body portion 11 is hindered, or the hand springs. It is possible to prevent it from being caught in the gap between the two.

<Third embodiment>
FIG. 4 is a diagram showing an example of the braking device 1 according to the third embodiment of the present invention. The braking device 1 according to the third embodiment limits the range in which the main body 11 of the braking device 1 according to the second embodiment shown in FIG. 3 is expanded and contracted.

In the braking device 1 according to the third embodiment, a second locking portion 22 is provided to slidably lock the lower portion of the main body portion 11 and the case 3. In the example of FIG. 4, the locking portion 22 slidably locks the upper portion of the main body 11 above the lower end portion 13, but the lower end portion 13 is slidably locked. Is preferable.

The case 3 is provided with a plurality of slits 23. The locking portion 22 is provided so as to be fixed to the main body portion 11 and slidable inside the slit 23. The locking portion 22 can be realized, for example, by fixing a nut to the main body portion 11 and screwing a screw into the nut from the outer surface of the case 3 through a slit 23.

The movement range of the locking portion 22 is limited by the slit 23. This limits the expansion and contraction range of the main body 11. Further, the slits 23 are arranged at positions deviated from each other in the longitudinal direction of the case 3. Thereby, it is possible to change in which slit 23 the locking portion 22 is arranged according to the thickness of the rope 2.

It is preferable that there is almost no gap between the rope 2 and the main body 11 of the braking device 1 in order to eliminate the time from the start of pulling the hook 14 or 15 to the start of braking. According to the braking device 1 according to the fourth embodiment, the main body 11 is formed so as to eliminate the gap between the rope 2 and the main body 11 of the braking device 1 by changing the slit 23 provided with the locking portion 22. Can be adjusted.

<Fourth Embodiment>
FIG. 5 is a diagram showing an example of the braking device 1 according to the fourth embodiment of the present invention. In the braking device 1 according to the fourth embodiment, a plurality of rod-shaped protective materials 4 are arranged around the main body 11 instead of the case 3. As shown in FIG. 5, the upper end portion 12 and the lower end portion 13 of the main body portion 11 are provided with the same number of

rings

41 and 42 as the number of protective materials 4, respectively, and the protective materials pass through the

rings

41 and 42. 4 is arranged. Both ends 43 of the protective material 4 are spherical, and the diameter of the spheres at both ends 43 can be made larger than the inner diameters of the

rings

41 and 42 so that the protective material 4 does not come off from the

rings

41 and 42.

In the braking device 1 according to the embodiment of FIG. 4, since the protective material 4 is arranged around the main body 11, the user can use the braking device as in the braking device 1 according to the second and third embodiments. Even if 1 is gripped, the expansion and contraction of the main body 11 is not hindered, and the risk of the user's hand being caught and injured can be reduced.

<Fifth Embodiment>
FIG. 6 is a diagram illustrating a braking device 1 according to a fifth embodiment of the present invention. In the braking device 1 according to the fifth embodiment, the main body portion 11'is not a spring but a plurality of plate members 51 formed into a tubular shape having a quadrangular cross section.

The plate material 51 may be curved so as to be convex to the outside of the tubular main body portion 11'. That is, the plate member 51 can be curved so that the cross-sectional shape of the main body 11 approaches a circle.

A connecting portion 52 is provided between the plurality of plate members 51. In the fifth embodiment, the connecting portion 52 is a disk-shaped member. FIG. 7 is a diagram illustrating a state in which the plate member 51 and the connecting portion 52 are connected to each other. The connecting portion 52 is provided with four through holes, and a through hole is also provided at the end of the plate material 51, and the connecting portion 52 and the connecting portion 52 are formed by a pin 53 passing through the through hole of the connecting portion 52 and the through hole of the plate material 51. The plate member 51 is rotatably connected to the pin 53.

The connecting portion 52 connected to the four plate members 51 as described above is arranged so that the main body portion 11'has a tubular shape with a quadrangular cross section. The open end of the plate member 52 connected to the connecting portion 52 is connected to another connecting portion 52. Further, as shown in FIG. 6, all the plate members 51 (excluding those arranged at the lower end of the main body portion 11') are in the longitudinal direction of the main body portion 11'(the direction parallel to the arrow DN). Arrange at an angle. As a result, when tension in the arrow DN direction (or in the direction opposite to the arrow DN) is applied to the main body 11', the angle between each of the two pairs of plate members 51 on the upper side and the lower side becomes smaller, and the main body The length of the entire portion 11'in the longitudinal direction becomes longer, and the inner diameter becomes smaller.

FIG. 6A is a diagram showing a state in which tension is not applied to the hook 15, and FIG. 6B is a diagram showing a state in which tension is applied to the hook 15. As shown in the figure, when the force of the arrow DN is applied to the main body 11', the main body 11', which had a length L1 in the longitudinal direction, extends to the length L2 and extends in the internal direction of the main body 11'. Stress is generated. For this reason, a gap (play) may be provided between the plate member 51 and the connecting portion 52 at the connecting portion between the plate member 51 and the connecting portion 52 by the pin 53. When the main body 11'extends and stress is generated in the internal direction, friction is generated between the main body 11'and the rope 2, and the rope 2 is braked.

<Sixth Embodiment>
FIG. 8 is a diagram illustrating a braking device 1 according to a sixth embodiment of the present invention. The main body 11'of the braking device 1 according to the sixth embodiment has the same configuration as the main body 11'of the fifth embodiment, but the cross section of the tubular main body 11'is octagonal. There is. As for the braking device 1 according to the sixth embodiment, as in the fifth embodiment, all the plate members 51 (excluding those arranged at the lower end of the main body portion 11') are the longitudinal lengths of the main body portion 11'. Arrange at an angle with respect to the direction (direction parallel to the arrow DN).

In the state shown in FIG. 8A in which tension is not applied to the main body 11', when tension is applied in the direction of arrow DN, the main body 11'is in the state shown in FIG. 8B, and the main body 11' 'Internal stress is generated. In the sixth embodiment, since the main body portion 11'has a tubular shape with an octagonal cross section, when an internal stress is generated, the rope is compared with the case of the braking device 1 of the fifth embodiment. The number of points to be pressed against 2 increases. Therefore, friction can be generated more easily and reliably.

<7th Embodiment>
FIG. 9 is a diagram illustrating a braking device 1 according to a seventh embodiment of the present invention. In the seventh embodiment, the main body portion 11'of the sixth embodiment is arranged inside the case 3'. By arranging the main body 11'inside the case 3', the diameter of the main body 11'is prevented from becoming larger than necessary, and when the hook 15 is pulled in the direction of the arrow DN, the main body 11'is It is possible to shorten the time required to apply stress to the rope 2 (not shown) to generate friction.

Further, FIG. 9 shows an example in which the braking device 1 is connected to the wearing tool 5 such as shoes by the fastener 51. By fixing the braking device 1 to what the user wears in this way, it becomes easy to make the braking device 1 function as an ascender.

<Modification example>
As described above, in the braking device 1 of the present embodiment, when tension is applied in the vertical (longitudinal) direction, the inner diameters of the main bodies 11 and 11'shrink, and the inside of the main bodies 11 and 11'and the rope 2 Presses against the rope 2 to generate inward stress on the rope 2. As a result, friction is generated between the main bodies 11, 11'and the rope 2, and the rope 2 can be stopped. According to the braking device 1 of the present embodiment, the main bodies 11 and 11'can be pressed and contacted substantially evenly from the periphery of the rope 2 toward the inside. Therefore, it is possible to reduce the generation of local stress on the outer skin of the rope 2 as compared with the case where the rope is sandwiched from two directions as in the conventional case.

Further, in the braking device 1 according to the first to fourth embodiments, the main body 11 is made of a spring. Therefore, the main body 11 contracts, the inner diameter expands, and the rope 2 can move inside the main body 11 only by loosening the tension in the vertical (longitudinal) direction. Therefore, the user can easily brake the rope 2.

Further, in the braking device 1 according to the fifth and sixth embodiments, the plate member 51 is rotatably connected to the connecting portion 52 and arranged in a net shape to form a polygonal tubular main body portion 11'. doing. Therefore, unlike the main body 11 according to the first to fourth embodiments, the contraction force is not generated, but the inward stress is eliminated in the entire circumference only by relaxing the tension in the vertical (longitudinal) direction. Immediately, the rope 2 can move inside the main body 11'. Therefore, the rope 2 can be easily braked.

Although the present embodiment has been described above, the above embodiment is for facilitating the understanding of the present invention, and is not for limiting and interpreting the present invention. The present invention can be modified and improved without departing from the spirit thereof, and the present invention also includes an equivalent thereof.

For example, in the first to fourth embodiments, it has been described that the main body portion 11 is a spring, but if the main body portion 11 is deformable so that the diameter becomes smaller when both ends are pulled in opposite directions, the main body portion 11 is used. 11 does not have to have elasticity.

When a spring is used for the main body 11, any tension spring can be selected for the shape of the wire, the spring constant, and other factors. For example, a square spring having a quadrangular cross section of the wire may be used, or the cross section of the wire may be elliptical instead of circular. It is also possible to use a compression spring for the main body 11.

Further, in the present embodiment, the rope 2 penetrating the main body portion 11 is assumed to extend downward, but the main body portion 11 (preferably the case 3 of the outer cover of the main body portion 11 or the protective material). A pulley may be arranged near the lower end portion 13 of 4) to change the extending direction of the rope 2. As a result, the rope 2 can be easily pulled up, and slack tending can be performed smoothly.

Further, in the above description, in the fifth and sixth embodiments, the main body 11'of the braking device 1 is configured to have a quadrangular or octagonal tubular cross section, but the present invention is not limited to this. , The cross section may be configured to be a polygonal cylinder. However, if the cross section is a triangular cylinder, it is preferable not to adopt the triangular cross-section shape because the triangle has a stable shape and stress cannot be efficiently generated inward. Further, when a polygonal shape having a cross section that is a multiple of 3 is adopted, all the plate members 51 are used as the main body as in the braking device 1 according to the fifth and sixth embodiments shown in FIGS. 6 and 8, respectively. It cannot be arranged at an angle with respect to the longitudinal direction of 11'(the direction parallel to the arrow DN), and there is a plate member 51 that crosses the two connecting portions 52 orthogonally to the longitudinal direction. Due to the presence of the horizontal plate member 51, the internal stress becomes unbalanced. Therefore, it is preferable not to adopt a polygonal shape having a cross section that is a multiple of 3.

Further, in the fifth and sixth embodiments, it is assumed that the plate member 51 is a plate-shaped member, but a rod-shaped member may be adopted. Further, the plate member 51 may be curved so as to provide a convex portion on the outside of the main body portion 11', or may be flat. However, by bending the plate member 51, especially when the curved plate member 51 is configured so that the cross section of the main body portion 11'is substantially circular, the tension is lost after the tension is applied to the main body portion 11'. In this case, a repulsive force is generated between the curved plate member 51 and the connecting portion 52, and an outward stress is generated from the main body portion 11', so that the main body portion 11'and the rope 2 are quickly separated from each other. It is possible to eliminate friction.

<8th Embodiment>
FIG. 11 is a diagram illustrating the braking device 1 according to the eighth embodiment. In the present embodiment, it is assumed that the braking device 1 is used as an ascender, but it can also be used as an ascender. The braking device 1 according to the eighth embodiment includes a main body 101, and the main body 101 is a stretchable member, for example, a resin, a metal, or a mixture of a resin and a metal (for example, 50:50). It is composed of those that are mixed according to the ratio). Further, the main body 101 can be integrally molded by, for example, a 3D printer. The inner diameter of the main body 101 is set to a size that allows a rope (not shown) to pass through the inside, and the inner surface of the main body 101 is large enough to allow the rope to slide while being in contact with the outer skin of the rope. Is preferable. A hook 104 is provided at the lower end 103 of the main body 101, and the hook 104 is connected to the body via, for example, a harness, and the upper end 102 is pulled down (moved in the direction of the arrow DN in FIG. 1) when descending. Since the inner diameter of the main body 101 is widened and the friction between the rope and the main body 101 is reduced, the main body 101 starts to descend while generating appropriate sliding. For example, when the user pulls up the rope (not shown) connected to the hook 104 in the direction of the arrow UP, or manually lifts the hook 104 or the lower end 103 in the direction of the arrow UP, the inner diameter of the main body 101 expands. The rope becomes slidable. Using this, the user can go up.

In the braking device 1 of the present embodiment, a substantially even radial inward force F can be applied to the rope from the entire circumference by the main body 1. Therefore, it is possible to reduce the force applied locally to the rope (disperse the force applied to the outer circumference of the rope) as compared with the configuration in which the rope is sandwiched from two directions as in the conventional technique shown in FIG. As a result, the risk of wear and tear on the rope, especially the exodermis, can be reduced. Since the braking device generates frictional force by contacting the exodermis and transmits the tension to the rope, it is possible to prevent a decrease in the tension of the rope and prolong the life by reducing the damage to the exodermis.

Further, in the braking device 1 of the present embodiment, since the main body can be integrally molded by the 3D printer, the number of parts can be reduced as compared with the case of assembling the parts, so that the quality varies at the time of assembly. Can be reduced, and the manufacturing man-hours can be reduced. Considering that molding with a 3D printer is possible, the material of the main body 101 is preferably a material having excellent heat resistance such as ABS resin or polyester. Further, when the material of the main body 101 is resin, for example, a powdery component can be mixed in order to cause sliding with the rope.

When the material of the main body 101 is metal, it is preferably a flexible wire-shaped member. In addition, as the main body 101, one in which a plurality of thin ropes formed of fibers such as nylon, polyester, technolar / polyester blend, Kevlar / polyester blend, etc. are woven may be used. For example, the upper end 102, the lower end 103, and the hook 104 may be made of resin or metal, and the main body 101 may be made of a plurality of ropes as described above. Thereby, for example, a plurality of rope through holes can be provided in the upper end 102 and the lower end 103, and the ropes can be tied and fixed.

Further, this braking device can also be used as a backup device for the winch. The braking device 1 of the present embodiment can be applied to other embodiments such as the second embodiment as well as the first embodiment within a range applicable to the configuration.

<9th embodiment>
FIG. 12 is a diagram illustrating a braking device 1 according to a ninth embodiment. In the present embodiment, the main body 11 and the upper tubular member 61 and the lower tubular member 62 that are connected to the main body 11 at the upper and lower ends are provided. The main body portion 11 is formed by combining a plurality of substantially disk-shaped connecting portions 52 and a plurality of elongated plate members 51. The upper tubular member 61 and the lower tubular member 62 are substantially cylindrical and preferably have at least one

U-shaped hook

612, 622. The upper tubular member 61 includes an upper connecting portion 613 that can be connected to the plate member 51 at the uppermost end of the main body 11, and the lower tubular member 62 has a lower portion that can be connected to the plate 51 at the lowermost end of the main body 11. By providing the connecting portion 623, the main body portion 11, the upper tubular member 61, and the lower tubular member 62 are coupled. The upper tubular member 61 and the lower tubular member 62 are cylindrical as a whole and have a through hole at the center. When used, the rope 2 can be passed through the through hole and the center of the main body 11.

FIG. 13 is a diagram illustrating an upper tubular member 61 and a lower tubular member 62. Although the upper tubular member 61 is shown as a representative, the lower tubular member 62 also has the same structure. FIG. 13A is a side view, and FIG. 13B is a top view. The upper tubular member 61 has a substantially cylindrical shape, has a through hole 611 penetrating in the left-right direction in this figure, and allows the rope 2 to pass through. A U-shaped hook 612 can be provided on the side surface. Further, an upper connecting portion 613 is provided on the main body portion 11 side. The upper connecting portion 613 may have any structure as long as it can be coupled to the main body portion 11, but for example, as shown in the drawing, a board-shaped member similar to the connecting portion 52 can be formed. The member on the board is provided with a predetermined number of through holes (two in the figure) penetrating in the thickness direction, and can be fixed by the plate member 51 and the pin 53 of the main body. One or more upper connecting portions 613 can be provided, and in the example of FIG. 13, two upper connecting portions 613 are provided.

The

hooks

612 and 622 can be provided on the side surface or the end surface of the upper tubular member 61 and the lower tubular member 62. The example of FIG. 13 is an example in which the hook 612 is provided on the side surface of the upper tubular member 61. On the other hand, FIG. 14 shows a case where the hook 612 is provided on the upper end surface of the upper tubular member 61. By providing the

hooks

612 and 622 on the end faces of the tubular member, the force applied to the braking device 1 becomes vertical when the rope 2 is hooked on the hook and a force is applied in the vertical direction, which is preferable. The

hooks

612 and 622 may be connected to the tubular member in a state where the angle can be changed. In particular, when it is provided on the end face of the tubular member as shown in FIG. 14 (a), the movable member is provided at the base where the hook 612 is connected to the tubular member as shown in FIG. 14 (b) which is a view from above. May be provided so that the other end opposite to the base can be turned in the direction of the arrow. By allowing the

hooks

612 and 622 to change the angle with respect to the tubular member in this way, the

hooks

612 and 622 do not get in the way when the rope is inserted.

FIG. 15A is an enlarged view of the main body 11. The main body portion 11 is configured by combining a plurality of connecting portions 52 and a plate material 51. The connecting portion 52 is a substantially disk type having a predetermined thickness. The connecting portion 52 is provided with a plurality of through holes for connecting to the plate member 51. When four plate members 51 are connected to one connecting portion 52 as shown in this figure, four through holes are provided. It is preferable that the connecting portion 52 and the plate member 51 are warped so as to be convex outward along the rope 2 inserted in the longitudinal direction of the main body portion 11. The plate material 51 has an elongated shape and has a predetermined thickness. The plate member 51 is rotatably connected to the connecting portion 52 at both ends of the elongated shape. The method of binding is not limited, but pin 53 may be used as shown, for example. FIG. 15B is a schematic cross-sectional view of the joint portion between the connecting portion 52 and the plate member 51. The plate member 51 may be provided with a pin 53 at an end portion. The plate material 51 and the pin 53 may be separate or integrated, but the lower surface of the plate material 51 (the side where the rope 2 hits) is flat so that the pin 53 does not protrude due to sliding with the rope 2. It is preferable to have. It is preferable that the connecting portion 52 is provided with a through hole and is designed to have a diameter such that an appropriate gap is formed between the plate material 51 and the pin 53 so that the plate member 51 can rotate with respect to the connecting portion 52. Further, the pin 53 may be appropriately provided with a cap 531 so that the plate member 51 does not come off from the connecting portion 52. The connecting portion 52 and the plate material 51 need only be capable of rotatably connecting the plate material 51 to the connecting portion 52. Therefore, the coupling structure is not limited to the pin structure shown in FIG. 15, and a hinge or the like may be adopted.

Returning to FIG. 12, in the present embodiment, the connecting portion 52 connects the four plate members 51. As a whole, the connecting portions 52 are positioned so as to face each other at the same position in the vertical direction, and are arranged at equal intervals in the vertical direction while rotating by 90 degrees. Further, it is preferable that the number of connecting portions 52 in the vertical direction is an odd number because the main body portion 11 becomes symmetric with respect to the center in the vertical direction. In the example of FIG. 12, the connecting portions 52 include 52-1 to 52-7, for a total of seven.

Similarly, in the present embodiment, when the lower tubular member 62 is used as an ascender, the main body portion 11 contracts and the inner diameter surrounded by the plate member 51 and the connecting portion 52 expands when the lower tubular member 62 is pulled upward. Friction with the rope 2 is eliminated, and the braking device 1 can be easily pulled up with respect to the rope 2. Further, when the lower tubular member 62 is pulled downward, the main body portion 11 is stretched, and the inner diameter surrounded by the plate member 51 and the connecting portion 52 becomes smaller, so that the frictional force between the rope 2 and the rope 2 suddenly increases. The braking device 1 does not move downward with respect to the rope 2.

The upper tubular member 61 and the lower tubular member 62 are made of metal, ceramic, resin, or a mixed material from the viewpoint of strength and durability. Further, the connecting portion 52 and the plate material 51 are made of metal, ceramic, resin or a material in which these are mixed, and can be selected in consideration of the property and strength of friction. For example, it can be composed of a metal such as stainless steel, aluminum or titanium, or a resin such as ABS resin or MC nylon.

According to the present embodiment, by providing the upper tubular member 61 and the lower tubular member 62, it is easy for the operator to grasp and operate when moving up and down.

The design example of this embodiment is shown below. The design of the braking device can be optimized as appropriate according to the thickness, material and application of the rope. As an example, a case where the rope is used for a rope having a diameter of about 12 mm will be described as an example. In FIG. 13, the axial length L1 of the tubular member is 20 mm to 100 mm, preferably 40 mm to 60 mm, from the viewpoint of operability (easy to hold by an operator). The outer diameter L2 of the tubular member is 15 mm to 50 mm, preferably 25 mm to 35 mm from the viewpoint of strength. The size L3 of the hook 612 in the direction perpendicular to the axial direction may be a size that can tie a rope, for example, 10 mm to 50 mm, preferably 20 mm to 35 mm. The inner diameter L4 of the tubular member is designed to be slightly larger than the diameter of the rope 2, and is, for example, 12.5 mm to 16 mm, preferably about 14 mm.

<Modification 1 of the ninth embodiment>
FIG. 16 is a diagram showing a modified example 1 of the ninth embodiment. In this modification, at least one of the through

holes

611 and 621 of the upper tubular member 61 and the lower tubular member 62 is provided with

protrusions

614 and 624. The

protrusions

614 and 624 have the effect of creating a trigger that causes friction between the rope 2 and the braking device 1. That is, if the gap between the outer diameter of the rope 2 and the inner diameter of the upper tubular member 61 or the lower tubular member 62 is too small, it will not be smooth when inserting the rope 2 or pushing up the braking device. If the design is made larger, friction is less likely to occur when the braking device is extended to prevent the rope 2 from moving. Therefore,

protrusions

614 and 624 are provided on at least one of the upper tubular member 61 and the lower tubular member 62. By providing the

protrusions

614 and 624, it is possible to create an appropriate trigger for friction generation when the braking device 1 is extended.

16 (a) is a view of the lower tubular member 62 as viewed from below, FIG. 16 (b) is a side view of the lower tubular member 62, and FIG. 16 (c) is the upper tubular member 61. It is a figure seen from above. The lower tubular member 62 is provided with a protrusion 624 on the inner surface of the through hole 621. As shown in FIG. 16A, the protrusion 624 is formed with a thickness such that it comes into contact with the rope 2. That is, the thickness can be designed to be substantially equal to the difference between the diameter of the through hole 621 and the outer diameter of the rope 2. For example, when the diameter of the through hole 621 is 14 mm and the outer diameter of the rope 2 is 12 mm, the thickness of the protrusion 624 can be 1 mm.

The shape of the protrusion 624 is not particularly limited, and for example, as shown in FIG. 16B, a predetermined length may be provided in the longitudinal direction of the through hole 621 of the lower tubular member 62. In addition, as shown in FIG. 17A, small protrusions 624 may be arranged at equal intervals, or as shown in FIG. 17B, formed so as to draw a spiral along the inner wall of the through hole 621 in the longitudinal direction. May be done.

Further, the difference is made so that the total number and the actual lengths of the protrusions provided on the upper tubular member 61 and the lower tubular member 62 are larger in the upper tubular member 61 than in the lower tubular member 62. Can be attached. In the example of FIG. 16, the lower tubular member 62 is provided with three protrusions 624, and the upper tubular member 61 is provided with four protrusions 614. This is for the purpose of generating friction larger than that of the lower tubular member 62 when the lower tubular member 62 is pushed down to generate friction. The number of each protrusion is not limited to this, and can be appropriately designed in consideration of the difference in friction. Further, the material of the protrusion can be composed of metal, resin, ceramic, a mixture thereof, or the like.

<Modification 2 of the ninth embodiment>
18 to 21 are diagrams showing the second modification of the ninth embodiment. The purpose of this modification is to maximize the degree of expansion and contraction in order to maximize the frictional force generated during expansion and contraction. This point will be described first. 21 (a) is a schematic view of the main body 11 developed, and FIG. 21 (b) is a schematic view of the main body 11 as viewed from the side. In each case, the main body 11 represents the most contracted state. In the state where the main body 11 is most contracted, ideally, as shown in FIG. 21A, the plate members 51 are oriented in a substantially horizontal direction and are arranged so as to be in contact with each other. The braking device 1 of the present invention stops the braking device 1 with respect to the rope 2 by the frictional force generated when the main body 11 is extended, and the generated frictional force is the expansion and contraction when the extension is started. The higher the degree, the larger the size. That is, the frictional force becomes maximum when the elongation starts from the state of FIG. 21 (a) where the elasticity is the largest. On the other hand, if the state when the main body 11 is most contracted is a state where the main body 11 is more spaced from each other than the schematic view of FIG. 21 (a), the frictional force generated when extending from the main body 11 is less than the maximum value. Only force is generated.

In this modification, at least one of the upper connecting portion 613 and the lower connecting portion 623 is provided with

movable mechanisms

615 and 625 to increase the degree of expansion and contraction. Hereinafter, an example of the upper tubular member 61 will be described, but the same applies to the lower tubular member 62. The movable mechanism 615 makes it possible to change the direction of the tip of the upper connecting portion 613 on the main body 11 side so as to face the rope 2 outward. That is, as shown in FIG. 21 (b), the tip of the upper connecting portion 613 can be opened to the outside by providing the movable mechanism 615. By opening the upper connecting portion 613 outward in this way, the main body portion 11 can be easily expanded and contracted, and the degree of expansion and contraction can be increased. The structure of the movable mechanism 615 is not particularly limited, but may be, for example, a hinge. In that case, a rod-shaped member is fixedly installed as a rotation shaft on the base of the upper connecting portion 613, and the tip portion of the upper connecting portion 613 is connected so as to be rotatable along the side surface of the rod-shaped member.

FIG. 18 is an example of a hinge type movable mechanism 615. 18 (a) and 18 (b) are side views of the upper tubular member 61, FIG. 18 (a) is a view of the movable mechanism 615 from above, and FIG. 18 (b) is a side view of the movable mechanism 615. It is a view. In FIG. 18, a movable mechanism 615 including two

ring members

6151A and 6151B is provided on the lower end surface of the upper tubular member 61. The

ring members

6151A and 6151B are rotatably coupled to the

openings

6152A and 6152B, respectively, while being coupled to the upper coupling member 613. Instead of providing the

openings

6152A and 6152B, a rotating shaft to which the

ring members

6151A and 6151B are connected may be provided. With such a structure, the

ring members

6151A and 6151B can be coupled to the upper tubular member 61 in a state where they can rotate outward (on the side opposite to the rope 2).

FIG. 19 is another example of the hinge type movable mechanism 615. Unlike FIG. 18, the movable mechanism 615 includes only one ring member 6151A. Similar to the above, the ring member 6151A rotatably couples to the opening 6152A while coupling to the upper coupling member 613.

FIG. 20 is yet another example of the hinge type movable mechanism 615. In the example of FIG. 20, the movable mechanism 615 is provided with a rotating shaft, and the upper coupling member 613 is provided so as to be rotatable on the axis of the rotating shaft.

<Modification 3 of the ninth embodiment>
FIG. 22 is a diagram showing a modified example 3 of the ninth embodiment. In this modification, in at least one of the upper tubular member 61 and the lower tubular member 62, the curved surface portion 616 is formed at a corner formed by the end surface on the side not connected to the main body portion 11 and the inner walls of the through

holes

611 and 621. , 626. FIG. 22 shows an example of the lower tubular member 62, but the same may be applied to the upper tubular member 61. At the lower end of the inner wall of the through hole 621 of the lower tubular member 62, a curved surface portion 626 is provided at a corner. The curved surface portion 626 is preferably R-shaped. It is sufficient that the curved surface portion 626 is provided at least at the corner of the through hole 621, but as shown in FIG. 22, it is more preferable that not only the corner of the through hole 626 but also the corner with the outer wall surface has the curved surface portion. According to this modification, when the lower end portion of the braking device 1 is pushed up by passing the rope 2 through and pushing the rope 2 upward in the arrow direction as shown in FIG. 22B, the end portion of the lower tubular member 62 Has a curved surface portion 626 so that the rope 2 does not have to be caught.

<Modification 4 of the ninth embodiment>
23 to 26 are diagrams showing a modified example 4 of the ninth embodiment. In this modification, at least one of the upper tubular member 61 and the lower tubular member 62 includes opening / closing mechanisms 71 and 72 capable of opening and closing the side surfaces. Hereinafter, the upper tubular member 61 will be described as an example, but the same applies to the lower tubular member 62.

FIG. 25 is a schematic view of the lower end surface of the upper tubular member 61. In this modification, the upper tubular member 61 includes a first member 711 and a second member 712. The first member 711 and the second member 712 are in contact with each other along the axial direction of the tubular member, and can form a cylindrical shape as a whole in the closed state. The first member 711 and the second member 712 are rotatably connected to each other by a rotating shaft 713 penetrating both of them at one contact surface. Further, the other contact surface has a fixing pin through hole 714 penetrating the first member 711 and the second member 712, and both can be fixed in a closed state by inserting the fixing pin 715. That is, FIG. 25 (a) is a closed state, and the first member 711 and the second member 712 are connected at the two contact surfaces to form an overall cylindrical shape, and FIG. 25 (b) is open. In this state, the first member 711 and the second member 712 are connected on the side of the rotation shaft 713, and the first member 711 rotates about the rotation shaft 713 as a fulcrum.

26 (a) is a side view of the upper tubular member 61, and FIG. 26 (b) is a cross-sectional view. The contact surfaces of the first member 711 and the second member 712 are alternately intertwined with each other as shown in FIG. 26A. Since the rotating shaft 713 is provided so as to penetrate the intricate portion of the first member 711 and the second member 712, the first member 711 and the second member 712 can be rotatably coupled and held. Similarly, the fixing pin 715 can be inserted so as to penetrate the intricate portion of the first member 711 and the second member 712 on the other contact surface. When using the braking device 1 of the present invention, the lock is first released by removing the fixing pin 715, and the first member 711 is opened by rotating the rotation shaft 713 as a fulcrum (FIG. 25 (b)). )). Then, when the rope 2 is passed through the through hole 611, the first member 711 is closed again to be in the closed state (FIG. 25 (a)), and the fixing pin 715 is inserted so that the first member 711 and the second member 712 do not open. Fix it like this. The fixing pin through hole 714 may have an arbitrary structure such as key processing at its end so that the fixing pin 715 does not come off.

According to this modification, at least one of the upper tubular member 61 and the lower tubular member 62 is provided with the opening / closing mechanisms 71 and 72, so that the work of passing the rope 2 through the through hole of the tubular member during use can be easily performed. Become. Further, instead of the opening / closing mechanisms 71 and 72, a diameter expanding mechanism capable of increasing the diameter of the through holes of the upper tubular member 61 and the lower tubular member 62 may be provided. The specific structure of the diameter-expanding mechanism is not limited, and it is sufficient that the through hole can be expanded when the rope 2 is passed and the diameter expanded at the time of use can be reduced.

As described above, according to the present embodiment, the rope 2 can be reliably braked by the simple structure including the upper tubular member 61, the lower tubular member 62, and the main body portion 11. In the present embodiment, the braking device 1 can be vertically symmetrical as a whole. That is, when the upper tubular member 61 and the lower tubular member 62 have the same structure, they can be used in the same manner regardless of which one is on top. By making the braking device 1 vertically symmetrical, it is possible to reduce the risk that the user will accidentally cause an accident in the field, and it is easy to use.

1 Braking device 2 Rope 3 Case 4 Protective material 9 Conventional braking device 11 Main body 11'Main body 12 Upper end 13 Lower end 14 Hook 15 Hook 16 Gap 21 Locking part 22 Locking part 23 Slit 41 Ring 42 Ring 43 End Part 91 Main body 92 Swing part 93 Shaft 94 Hole 95 End part 96 Inner wall 97 Groove 101 Main body part 102 Upper part 103 Lower end 104 Hook

Claims

The friction member that surrounds the rope and
The friction member is provided with a hook for applying tension in the longitudinal direction of the rope.
The friction member is urged to press contact with the rope when the tension is applied.
Rings are provided at the first and second ends of the friction member, respectively.
Further provided with a rod-shaped member penetrating the ring at the first end and the ring at the second end.
A braking device characterized by.
The friction member that surrounds the rope and
The friction member is provided with a hook for applying tension in the longitudinal direction of the rope.
The friction member is urged so as to be in pressure contact with the rope when the tension is applied, and the plate-shaped member is connected in a tubular shape by a coupling member.
A braking device characterized by.
The braking device according to claim 1 or 2.
The friction member is a spring
A braking device characterized by.
The braking device according to claim 1 or 2.
Further provided with a cover for accommodating the friction member
The first end of the friction member is fixed to the cover and
The first hook is arranged on the cover
The second hook is arranged at the second end of the friction member,
A braking device characterized by.
The braking device according to claim 1 or 2.
The friction member has a tubular shape having a quadrangular or octagonal cross section.
A braking device characterized by.
The braking device according to claim 1 or 2.
Further provided with a cover for accommodating the friction member,
A braking device characterized by.
The friction member that surrounds the rope and
A hook for applying tension in the longitudinal direction of the rope to the friction member is provided.
The friction member is urged to press contact with the rope when the tension is applied.
It is a braking device characterized by
The friction member is a member that can expand and contract in the longitudinal direction of the rope.
With multiple first members that are elongated
A braking device including a plurality of second members that rotatably connect the plurality of the first members.
The braking device according to claim 7, wherein the first member is arranged at an angle with respect to the longitudinal direction.
The second member connects four first members to each other.
The braking device according to claim 8, wherein the first member is connected to the second member at both ends thereof.
The first member is provided with a first through hole.
The second member is provided with a second through hole.
The braking device according to any one of claims 7 to 9, further comprising a pin passing through the first through hole and the second through hole.
The braking device according to any one of claims 7 to 10, wherein the first member is curved so as to be convex outward.
The braking device according to any one of claims 7 to 11, wherein the friction member has a polygonal tubular cross section.
The braking device according to claim 12, wherein the friction member has a quadrangular or octagonal cross section.
The friction member that surrounds the rope and
A hook for applying tension in the longitudinal direction of the rope to the friction member is provided.
The friction member is urged to press contact with the rope when the tension is applied.
It is a braking device characterized by
The friction member is a member that can expand and contract in the longitudinal direction of the rope.
A braking device, characterized in that a plurality of stretchable long members are woven diagonally with respect to the longitudinal direction.
The friction member that surrounds the rope and
An upper tubular member provided at the upper end of the friction member and a lower tubular member provided at the lower end of the friction member are provided.
A braking device characterized in that the friction member is a member that is urged to press contact with the rope when the tension is applied and is expandable and contractible in the longitudinal direction of the rope.
The braking device according to claim 15, wherein at least one of the upper tubular member and the lower tubular member is provided with a protrusion on an inner wall.
At least one of the upper tubular member and the lower tubular member comprises a connecting portion to be coupled to an end portion of the friction member.
The braking device according to claim 15 or 16, wherein the connecting portion includes a movable member that can rotate in a direction that increases the diameter of the friction member.
The braking device according to claim 17, wherein the movable member is a hinge.
At least one of the upper tubular member and the lower tubular member has an end face on a side that does not bond with the friction member.
The braking device according to any one of claims 15 to 19, wherein the corner portion formed by the inner wall and the end face is provided with an R shape.
At least one of the upper tubular member and the lower tubular member
The braking device according to any one of claims 15 to 19, further comprising an opening / closing mechanism on the side surface.
The braking device according to any one of claims 15 to 20, which is vertically symmetrical.